In its purest form, it's odorless, nearly colorless and tasteless. It's in your body, the food you eat and the beverages you drink. All forms of life need it. What substance is more necessary to our existence than any other? Water.| HowStuffWorks
About 90 percent of Americans consume some form of caffeine every day: It's our most popular drug by far. What's so special about this stimulant?| HowStuffWorks
Ever wonder how a toaster knows when something is done? Does it pop it up regardless? Does it really care if you pick "Light" or "Medium" or "Dark"?| HowStuffWorks
The light bulb hasn't changed a whole lot in its 120 years -- the original design was just that good. Apparently, you can throw together a filament, a glass mount, an inert gas and a bit of electricity and change the world. Learn what happens when yo| HowStuffWorks
Every morning you scoop in the coffee, add the water and turn it on, but have you ever wondered what is happening inside your coffee maker? Find out how that precious gadget delivers your wake-up dose.| HowStuffWorks